WhatsApp CEO Jan Koum says the popular messaging application for smartphones acquired this week by Facebook will soon be offering a voice service. Koum says “we are going to introduce voice in WhatsApp in the second quarter of this year.”…

Microsoft announced this at MWC 2014, and the app will bring a set of features very similar to what is seen in the Android and iOS versions. Microsoft has confirmed that the Facebook Messenger application will be landing on…